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Various methods of gold plating
Gold Plating: An Overview
Modern-day technology has allowed us to decorate metals with a variety of different substances. One such decoration, gold plating, is a process in which a thin layer of gold is applied over another metal, usually nickel, to create a harder and more attractive surface. Go......
24/06/2023 
1036 
Sophia
Varieties and specifications of hot-rolled ribbed steel bars and introduction of vanadium-containing grade Ⅲ threaded steel bars
Ribbed steel bars produced by hot rolling are divided into common steel bars, high-strength steel bars, steel bars for welded structures, low-alloy steel bars, and stainless steel bars. Among the common steel bars, flat-headed steel bars, corrugated steel bars, and cold-headed steel bars are mainl......
Vanadium-containing steel bars were once used as the main body of grade III steel bars
Fiber reinforced (FER) concrete with VAR reinforcement was previously considered the only type of steel reinforcement available for the Third Level Structural Concrete Code rules. This code is a mandatory stipulation that increases the requirements for the strength and response in flexural and she......
vacuum electronics
Vacuum Electronics
Vacuum electronics is an important and specialized part of modern electrical technology. Vacuum tubes are sealed metal, glass, or ceramic containers which have been evacuated to an extremely low partial pressure of gases, and these tubes contain three separate elements, an elec......
vacuum arc remelting
Vacuum arc remelting (VAR) process is a type of electron beam thermal treatment that has been widely used in the production of high quality alloy and superalloy products. It is a modern and efficient melting process that uses an electric arc while in a vacuum to melt and refine a specific alloy.
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Volatile roasting
Roasting is a cooking method where heat is applied directly to raw cocoa beans to bring out the unique flavors of the bean. The cocoa beans are heated in a roasting machine to a temperature of about 150 to 180 degrees Celsius for approximately 20 minutes. The roasting process begins when the cocoa......
Vickers hardness
Rockwell Hardness testing is a fundamental part of many industries. It is used to measure the penetrating force that a substance has, and therefore the hardness of that substance. The test is used in a variety of industries including, but not limited to, wood, steel, plastics and rubber.
The Rock......
Variety
How Trees Impact Our Ecology
Trees are vital to the Earth’s ecology, providing oxygen, sequestering carbon, and providing habitats for many organisms. Through the process of photosynthesis, trees produce oxygen and use carbon dioxide, providing an essential balance to our atmosphere. Trees not o......
Various metallographic microscopes in iron and steel metallographic experiment technology
Metallographic Microscopes
Metallographic microscopy is a method used by metallurgists, material engineers and technicians to observe the structure of metallic alloys and other materials. It involves embedding the material in a medium, such as epoxy or mounting wax, and polishing it to a smooth ......
Vitiligo
My Experience with Vitiligo
I look into the mirror, and gasp loudly when I catch a glimpse of myself. My abdomen is covered with patches of pale, milky-white skin - my vitiligo is painfully evident.
I was diagnosed with vitiligo when I was fifteen. After a week of skin irritation and an itchy r......
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